+#!/usr/bin/python
+
"""Node Manager"""
import optparse
import time
+import xmlrpclib
+import socket
+import os
+import sys
+import resource
-from config import *
-import accounts
-import api
-import database
-import delegate
import logger
-import plc
-import sliver
import tools
+from config import Config
+from plcapi import PLCAPI
+import random
+
+savedargv = sys.argv[:]
parser = optparse.OptionParser()
-parser.add_option('-d', '--daemon',
- action='store_true', dest='daemon', default=False,
- help='run daemonized')
-parser.add_option('-s', '--startup',
- action='store_true', dest='startup', default=False,
- help='run all sliver startup scripts')
+parser.add_option('-d', '--daemon', action='store_true', dest='daemon', default=False, help='run daemonized')
+parser.add_option('-s', '--startup', action='store_true', dest='startup', default=False, help='run all sliver startup scripts')
+parser.add_option('-f', '--config', action='store', dest='config', default='/etc/planetlab/plc_config', help='PLC configuration file')
+parser.add_option('-k', '--session', action='store', dest='session', default='/etc/planetlab/session', help='API session key (or file)')
+parser.add_option('-p', '--period', action='store', dest='period', default=600, help='Polling interval (sec)')
(options, args) = parser.parse_args()
+modules = []
+
+def GetSlivers(plc):
+ data = plc.GetSlivers()
+ # net needs access to API for i2 nodes.
+ for module in modules:
+ if module.__name__ == 'net':
+ module.GetSlivers(plc, data)
+ else:
+ callback = getattr(module, 'GetSlivers')
+ callback(data)
+
+def UpdateHostKey(plc):
+ logger.log('Trying to update ssh host key at PLC...')
+ ssh_host_key = open('/etc/ssh/ssh_host_rsa_key.pub').read().strip()
+ plc.BootUpdateNode(dict(ssh_host_key=ssh_host_key))
+ logger.log('Host key update succeeded')
+
def run():
try:
if options.daemon: tools.daemon()
- accounts.register_account_type(sliver.Sliver)
- accounts.register_account_type(delegate.Delegate)
+ # Load /etc/planetlab/plc_config
+ config = Config(options.config)
- other_pid = tools.pid_file()
- if other_pid != None:
- print """There might be another instance of the node manager running as pid %d. If this is not the case, please remove the pid file %s""" % (other_pid, PID_FILE)
- return
+ try:
+ other_pid = tools.pid_file()
+ if other_pid != None:
+ print """There might be another instance of the node manager running as pid %d. If this is not the case, please remove the pid file %s""" % (other_pid, tools.PID_FILE)
+ return
+ except OSError, err:
+ print "Warning while writing PID file:", err
+
+ # Load and start modules
+ for module in ['net', 'proper', 'conf_files', 'sm', 'bwmon']:
+ try:
+ m = __import__(module)
+ m.start(options, config)
+ modules.append(m)
+ except ImportError, err:
+ print "Warning while loading module %s:" % module, err
+
+ # Load /etc/planetlab/session
+ if os.path.exists(options.session):
+ session = file(options.session).read().strip()
+ else:
+ session = options.session
+
+ # Initialize XML-RPC client
+ plc = PLCAPI(config.plc_api_uri, config.cacert, session, timeout=options.period/2)
- database.start()
- api.start()
while True:
- try: plc.fetch_and_update()
+ try: UpdateHostKey(plc)
+ except: logger.log_exc()
+ try: GetSlivers(plc)
except: logger.log_exc()
- time.sleep(10)
+ time.sleep(options.period + random.randrange(0,301))
except: logger.log_exc()
-if __name__ == '__main__': run()
+if __name__ == '__main__':
+ stacklim = 512*1024 # 0.5 MiB
+ curlim = resource.getrlimit(resource.RLIMIT_STACK)[0] # soft limit
+ if curlim > stacklim:
+ resource.setrlimit(resource.RLIMIT_STACK, (stacklim, stacklim))
+ # for some reason, doesn't take effect properly without the exec()
+ python = '/usr/bin/python'
+ os.execv(python, [python] + savedargv)
+ run()
else:
# This is for debugging purposes. Open a copy of Python and import nm
tools.as_daemon_thread(run)